Governor.



No. 867,664. PATENTED OCT. 8, 1907.

C. R. LANPHBAR.

GOVERNOR.

APPLICATION FILED 1m06.190s.

Nyrfwl .WHVI

m. bm CLINTON R. LANPHEAR, OF MIDLAND, MICHIGAN.

GOVERNOR.

Specification of Letters Patent.

Patented Oct. 8, 1907.

Application filed December 6, 1906. Serial No. 346,629,

To all whom it may ro'nccm:

Be it known that I, GLiNToNl R. LANPHEAR, a citizen of the United States, residing at Midland, inthe county ol Midland and Stale of Michigan, have invented certain new and useful Improvements in Electromechanical Governors, and do hereby declare the l'ollowing to be a lull, clear7 and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to electro-mechanical governors.

One object ol' my invention is to provide a simple yet absolutely reliable means for automaticallyY closing a circuit to cut oil the power' or give` an alarm when the Speed exceeds or diminishes below a predetermined rate. Such a mechanism as this is highly necessary in any power device wherein the load to be driven or the work to be done may vary, as with a light load the machinery will speed up, or with a heavy load the speed will diminish. Another cause of diminished power would be the clogging o1' the machinery, of which my invention would give notice or sluit off the power. Its use is also of great importancewherever beltingis employed, es for instance, should such helling break orslip ofi the pulleys, or in case the bclting slipped on the pulleys, as vwhere an obstruction clogs the machinery, it is`-very apt to become wedged against the side ot the pulley and the friction -is liable to cause a'fire, either owing to the belt itself' taking (ire and carrying it to adjacent ywoodwork, or from sparks dropping into an inflammable or combustible material.

My invention is also capable of use as a speed governor to control or regulate the speed of the 'moving parts, it being obvious that the governor might be employed in connection with electrically operated stop valves.

To these and other ends, therefore, my invention Consists in the combination of a centrifugal governor with a' make-and-break contact, the novelty residing in the novel features and combinations, more fully described hereinafter and particularly pointed out in the claims.

Another object is to provide a means for offsetting the tension ol the spring contacts used in the make and break.

In the accompanying drawings illustrating one embodiment of my invention, Figure l is a view in side elevation of an el cetro-mechanical governor constructed in accordance with my invention, Fig. 2 is a partial vertical section through the device, and Fig. 3 is a detail view of the'contaets.

(A) indicates a suitable standard on a base (l), the upper part of the standard being reduced in circumference and bored out, as shown at (2) to orm aspindle having a cone bearing or shoulder (3) at its point of connection with the body portion of thestandard, the upper end of the hollowspindle designed to receive a second cone bearing (Il).

The spindle is encircled by a sleeve (5) which sleeve at its upper end is provided with a circular lramc (l). A ball bearing (7) is located on the sleeve and in engagement with thc conc (l), the lower c`nd ol the sleeve being equipped with a gear (S) and ball bearing (9), the latter engaging the cone shoulder (3), and constituting together with the ball bearing (7), an anlil'riction supporti'or the trame. A second gear (l0) carried on the shalt (ll), supported, it may, be in a bracket (l2) meshes with the gear (S), the counter shaft (1l) also conveniently having a pulley ('13) connected with a moving part ol the machine to be controlled by means of a belt, not` shown. Of course, gearing might be substituted in place oi' the pulley and belt without `deviating from the spirit and scope of my invention.

Iivotally secured at diametrically opposite pointson the annular rotatable frame (6) arc the rigid bell cranks (14) (14), the outer' ends oi each ol which are provided with the governor balls (l5), the inner ends of the arms having thelinks (I6) (1(5) secured thereto,y the opposite ends of the links being pivotally secured to a collar (I7) adjustably mounted on a vertically extending ro'd.(l8) slidingly received in the hollow v spindle (2) and protruding therebeneath, as shown. The upper end of the 'sliding rod passes through the periphery of the annular frame, bv which the rod is guided in itsreciprocation.

By connecting the rod (1S) to the governor balls inA the manner shown a greater range of mov ornent is given the rod (1S).

An adjusting cap (19) is adjustably secured to the frame (6), the rod passing loosely through the cap, which cap is recessed to serve as a seat i'or one end of a compression lspring (20), the opposite end` of which spring engages and bears against the collar (17) on the sliding rod (18).

Conveniently mounted on the base (A) are a pair of liber or other suitable non-conducting blocks (2l) (2l) designed to support the separable make-and break contacts (22)(22() preferably of the flat spring bow shape shown, the contacts each being suitably connected, as by means of the binding posts (23) (23), with the circuit wires (24) (24)A The free arms of each spring contact project toward and overlap each other, whereby to complete the circuit, each free arm carrying a set screw (25) (25"), the ends of which engage the respective fiber blocks for adjusting the free arms o the make-and-break contact relative to each other. The free arms, at their points of contact, may'be provided with platinum studs (27).

The undorlapping free spring arm carries a ber or other insulating block (26) having a step bearinglos vent `short circuiting to any`par't of the device, The circuitwires (24) (24) lead to any suitable electroresponsive mechanism for actuating a switch, a valve, alarm or whatnot. The set screw (25) is designed to adjust the tension of thejmovable spring arm (22() relative to the sliding rod (18), the spring'arm voperating as a regulating spring therefor. The set screw (25) merely adjusts the height of the overlapping spring arm (22). l v

The coil spring (20) is adapted to counteract the effect of theI spring contact arm (22') and also to a certain' extent, the effect of the governor balls on the rod (18) when such balls vare in the lowered positionv shown. .Thusthe spring (20) balances the rod (18) to render the latter'more sensitive to any change in the position ofthe governor balls when thrown outward, such outward inovement of the balls causing the rod to break the contact whenl the governor is rotating at a comparatively low speed.

The spring Contact piece (22) is U-shaped, the free lend of thearm (22) being received and movable be- -tween the ends (b) (b/) of the- U-shaped piece. Normally, the governor will retain the ree end of arm (22) at some point intermediate the ends (b) (b) of the double Contact (22) and out of engagement therewith when the device is in operation. In lcasethe speed increases unduly, the speed of that portion of the machine 'to which the governor is attached will also be increased in the same ratio through the bevel gears (8) and (l0), the former rotating the sleeve (5) with its annular frame (6) carrying the governor balls (15), causing the latter to move outwardly, yand lowering the inner ends of the bell crank arms (14)', which pull downward on the links (16) and collar (217), to depress the rod (18) against the tension of the spring contact arm (22() until when the predetermined speed atV which the governorhas been set is reached, the free end of such arm is caused to engagethe lower end (11() of the U-shaped contact (22), thus closing the circuit to any electro-responsive means, with which the governor may beop'erativelyr connected, to actuate an alarm or shut down the'powen On the other hand, should the speed of the parts de- .cr'ease below the normal, Athe 'weight of the governor balls will raise the rod (18) to permit the arm (22) to move upward until it.made Contact With-the end (b) Having thus fully of the U-shaped piece, thereby closing the circuit' and" accomplishing the aforementioned result.

It is obvious that the arm (22) isi-adapted to .vi-

' and any acceleration of speed above a predetermined amount would operate the governor v`to close the circuit through 'contat arm (22) and point `(b). The

'point (b)7 in this event, Would'se'rve as a safety device, sothat'in case the governor belt broke, for instance, al circuit would 'be 'completed through the a'rm (22) and point (b) to closel the stop valve as before, thus absolutely preventing accident when the governor is inoperative condition.

The governor is designed to operate as a safety stop for' motors, Ait being possible to connect it in circuit with the actuating mechanism of an electrically oporated circuit breaker, the governor being driven by belt or gearing from some uniformly rotating orlrecipvrocating portion of the machinery. v

It is evident that many changes might be made ip lthe form and arrangement of the several .parts described without departing from the spirit and scope of my invention, and hence, AI donot wish to limit myself to the exact construction herein set forth.

disclosed `my invention,` what I claim as new is f The combination in a governor witha base, insulating blocksV on the base, of a makc-an'd-break contact carried hy the blocks, the contact comprisinga bow-string and :m upwardly pressing spring arm,v the free end of which lies between the ends of the bow spring, a vertically-movable rod, an insulatingblock interposed between the lower end of the rcd and the spring arm, a collar fixed to the rod, an

annular rotatable frame, bell crankslpivotally mounted in the opposite sides of the annular rotatable trame, and

carrying governorrballs, links connecting the bell cranks and collar', they annular rotatable franievprovided with a downwardly extending i'otatahle-sleeve carrying n bevel gear whereby the frame is rotated, n compression spring adapted to counteract the upward effect of the spring' arm.'

an adjusting cap controlling; the tension of the compression spring, a hollow spindle carried by the base, and hall bearings at the upper and lower ends of the rotating sleeve.

In testimony whereof, l atlix my signnturelin presence of two witnesses.- A 'l l CLINTON' R. LANIHEAR.

AWitnesses` PAUL ENonoIs,

B. B. BALL: 

